Transdermal perfusion of fluids

ABSTRACT

Apparatus (1) for use in the formation of a suction blister on the skin of the human or animal body has a housing (21) attachable to the body and a contact surface (23) which in use is held in sealing contact with the skin, the housing defining a chamber (26) and the contact surface defining an aperture (27) communicating with the chamber. The apparatus has suction means (29) operable to form a partial vacuum in the chamber and thereby form a suction blister at a treatment site which is accessible via the aperture. The housing (21) is cooperable with the skin to form a closed compartment (29,26) of which the chamber constitutes at least a part and sealing means are provided operable between the contact surface and an annular portion of skin peripheral to the treatment site so that the partial vacuum is maintainable by substantially preventing the ingress of air during a blister forming period. &lt;IMAGE&gt;



